Two types of aminocarbonylation reaction of homoallylic amines have been developed. The treatment of homoallylic amines with triphosgene in dichloromethane led to formation of the corresponding beta-chlorolactams via Prins-type cyclization of a carbamoyl chloride intermediate. For the reaction in acetonitrile, beta-aminolactams were obtained via sequential Prins-type cyclization and Ritter-type reactions.